Magnetism is a force in which objects attract and repel. These forces are known as attraction and repulsion. If you take two magnets and put the north pole with the north pole they will repel as they will if you put two south poles together. If you put the north and south pole together then they will attract and that is when a you see a magnet connected to another magnet or a metal which is magnetic. They attract.
Attraction-When an object attracts another object meaning that the object gives a force to another object which pulls them together. It is difficult to separate them, sometimes impossible.
Repulsion-When an object repels with another object meaning that the object gives a force to another object which pushes them apart instead of bringing them together. It is difficult to put them together, sometimes impossible.